Highly Stable and Efficient Light-Emitting Electrochemical Cells Based on Cationic Iridium Complexes Bearing Arylazole Ancillary Ligands
作者:Marta Martínez-Alonso、Jesús Cerdá、Cristina Momblona、Antonio Pertegás、José M. Junquera-Hernández、Aránzazu Heras、Ana M. Rodríguez、Gustavo Espino、Henk Bolink、Enrique Ortí
DOI:10.1021/acs.inorgchem.7b01167
日期:2017.9.5
nature of the emitting triplet state. Whereas the benzimidazole unit stabilizes the LUMO and gives rise to a 3MLCT/3LLCT emitting triplet in [2][PF6] and [3][PF6], the presence of the thiazolyl ring produces the opposite effect in [4][PF6] and [5][PF6] and the emittingstate has a predominant 3LC character. Complexes with 3MLCT/3LLCT emitting triplets give rise to LEC devices with luminance values
Experimental and theoretical studies of pH-responsive iridium(<scp>iii</scp>) complexes of azole and N-heterocyclic carbene ligands
作者:Tahmineh Hashemzadeh、Andrew J. Christofferson、Keith F. White、Peter J. Barnard
DOI:10.1039/d3dt03766e
日期:——
carbene ligand). UV-visible and photoluminescence pH titration studies showed that changing the protonation state of these complexes results in significant changes in the photoluminescence emission properties. The pKa values of prepared complexes were estimated from the spectroscopic pH titration data and these values show that the nature of the pH-sensitive ligands (either main or ancillaryligands) resulted